package cn.tedu.imop.stock.dao.mapper;

import cn.tedu.imop.stock.entity.CouponStock;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface CouponStockMapper extends BaseMapper<CouponStock> {
    //初始化库存(insert)
    //查询库存(selct count(*) ...)
    //更新库存(update num=num-1 xxxx)

}
